Bunsen burner for heating or illuminating.



G. H. DENNY.

BUNSEN BURNER FOR HEATING 0R ILLUMINATING.

APPLICATION FILED 8EPT.23,1913. 1,090,202.

COLUMBIA PLANOGRAI'H 430., WASHINGTON, u. c.

llll'tllltll ltlltt PATENT @lt lfilltlltl,

GEORGE H. DENNY, OF NEWARK, NEW JERSEY.

BUNSEN BURNER FOR HEATING OR ILLUMINATING.

To (1Z6 whom it may (Bower/z Be it known that I, Gannon ll. Danni, 2 citizen of the United States, residing at l 3-; Third avenue, Newark, county of l lssex, and State of New Jersey, have invented certain new and usclul. improvements in Bunsen Burners iter Heating or illuminating, :lully described and rei n-csentcd in, the following specification and the accompanying drawings, forming a part of the same.

The invention consists in a modification ot' the stationary tube attached, to the base ot the burner by which a mixing-tube is tor-med of sheet-metal with an integral shoulder iu side such tube close to the top of the regulating sleeve, so that the shoulder may ope'ate as an air-valvc-seat, and the top ot the regulator-sleeve may serve as an air; valve in cooperati on with such seat, to cut oil the supply of air in proportimi as the supply of gas is increased. The shoulder proton ably formed by reverse bends in the metal to the tube which form a rounded seat for the air-valve, and the tops of the air inlets through the tube are made level with the airvalve-scat so that there is no obstructirni to the passage of air thereto.

llrly improved construction will be under stood by reference to the annexedv drawing, in which Figure 1 is an elevation of the burner; F 2 a section on line 22 in Fig. 1 looking toward the air-valve-seat; Fig. 3 a vertical section on line 3 3 in Fig. and Fi 1- shows an alternative construction for the attachment, in section at the right-hand side of the center line.

A burner for an incandescent light is shown, with base a for connection to the gas supply, and provided with an enlarged hub having a peripheral thread 6 to carry the yoke to support the air-valve-scat and With a smaller threaded nozzle 0 to which the reg ulator-slecve (Z that carries the air-valve a is threaded. The conical air-valve c has the gas-outlet hole 6 at the center, and the nozzle c is provided with the needle-valve f to enter the gas-outlet, and has holes 0 around the base of the needle-valve which connects the gas-supply with the outlet 0. The mixingiube j is supported upon the base a by columns h connected at the bottom to a ring g which is screwed to threads 7) upon the base, and at the top has a ring 2' from which the metal is bent inwardly to the tube j to form a shoulder required for the air-valve Specification of Letters Patent.

Application filed September 23. 1913,

i l l l Patented Ma r. 11%, 19M.

Serial No. 791.307.

seat. All these parts are of sheet-metal iutegral with the mixinn'dube. The collar and ring i are umtcrially larger than the mixing-tube y, to form the .slmuldcr it: which cousl itules the air-valvc-seat, the sheet-metal which forms the seat being prel'crably bent inwardly and downwardly from the ring and then iunvardly into the tube j, thus ilormiug a convex seat for contact with the upper conical end of the airvalvc, as is shown in Fig. 3, and producing annular channels Z and 7 which open downwm-dly and iu wvardly respectively. The air-valveseat Z is even with the lower edge of the ring 27, so that the latter docs notintcrliu'e at any time with the tree access o't air to the valve-seat, which is indicated by th s arrows at in Fig. 3. i

The spaces It between the columns 72 permit the turning of the air-valve by the liu hers, and the parts are so proportioned that when the gas-valve is gradually opened by screwing up the regulator, the air-valve contracts the air-passage between itself and the seat Z' and thus diminishes the supply of air in proportion as the supply of gas is in creased; until the full supply of gas is per milled and the air is entirely out ell by the contact of the air-valve with the seat 7.:.

The valve-seat may, if desired, be connected with the columns by a Hat flange 02, and all formed of sheet-metal as shown in Fig. l, but this comstruction does not present the same visible ileaturcs at the top and bottom of the columns, as the latter must be extended all the way to such flange to avoid interference with the movement of the air from the spaces It to the valve-scat. The collar g, the columns h and the ring '5 are preferably of the same cylindrical dimensions, which greatly facilitates the manufacture of this attachment in the drawing or stamping out the sheet-metal to form these parts.

In my construction, the regulator (Z without any extraneous attachments performs the desired function of varying the [low of the air and gas inversely, thus greatly simplitving and chcapening the construction.

ihinseu burners having the same general features as mine are already known, but not. possessing a mixing-tube oit' sheet-metal formed in, one piece with a shoulder by ex pending the tube at a suitable point, and extending such expanded portion downward in the term of legs to an integral collar by which the legs can be connected to the base of the burner. By my construct-ion, the burner-base requires an enlarged hub considerably larger than the mixing-tube, to receive the collar g which is formed by eX- panding the lower part of such mixingtube; and the use of a casting to form the valve-seat and support the mixing-tube upon the base is wholly avoided. My invention therefore includes such an integral con struction of sheet-metal as just described, and also the particular construction of the air-valve-seat by forming annular channels Z, Z, between the valve-seat and the ring i so as to produce a smooth rounded air-valveseat over which the air can flow freely from the spaces It.

Having thus set forth the nature of the invention what is claimed herein is:

1. in a gas-burner, the combination, with a base having a threaded nozzle with a needle-valve thereon, of a combined gasregulator and air-valve threaded upon the nozzle, a sheet-metal mixing-tube having a shoulder forming an integral convex airvalve-seat adjacent to the top of the airvalve, the metal of such seat being expanded into a ring materially larger than the mixing-tube, with columns extended downward from such ring, and a collar at the bottom 3 of the columns secured upon the base, such valve-seat, expanded ring and columns be ing of sheet-metal integral with the mixingtube,.as and for the purpose set forth.

2. In a gas-burner, the combination, with 35 a base having a threaded nozzle with a needle-valve thereon, of a combined gasregulator and air-valve threaded upon the nozzle, a sheet-metal mixing-tube having a shoulder forming an integral convex air- 40 valve-seat adjacent to the top of the airvalve with the sheet-metal bent upwardly therefrom and outwardly and downwardly into a ring level with the said convex seat, and columns extended downwardly from the 45 ring and secured upon the base.

in testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

GEGRGE H. DENNY.

Witnesses L. LEE,

(309165 of this patent may be obtained for five cents each, by addressing the Commissioner of Izetents, Washington, D. G. 

